Abstract
The microstructural evolution was investigated according to the equivalent strain in uniaxial compression using an ultra-low carbon steel. The equivalent strain was quantitatively calculated by using finite element analysis. The microstructure was rapidly refined up to the equivalent strain of 2.4 with the material flow to rolling direction (RD) with the remarkable development of high angle boundaries. At that time, texture such as (001)[110] and (111)[110] significantly developed. Inhomogeneous deformation behavior according to texture was observed; ⟨100⟩||ND was elongated without the development of subgrain even under large strain, but ⟨111⟩||ND was divided into small grains isolated with high angle boundaries.
